package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;

import com.sky.service.CategoryService;
import io.swagger.models.auth.In;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.rmi.MarshalException;
import java.time.LocalDateTime;
import java.util.List;

@Service
public class CategoryServiceImpl implements CategoryService {
    @Autowired
    private CategoryMapper categoryMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;

    /**
     * 分类分页查询
     *
     * @param categoryPageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(CategoryPageQueryDTO categoryPageQueryDTO) {
        //设置分页参数
        PageHelper.startPage(categoryPageQueryDTO.getPage(), categoryPageQueryDTO.getPageSize());
        //调用数据库,查询数据
        Page<Category> page=categoryMapper.pageQuery(categoryPageQueryDTO.getName(), categoryPageQueryDTO.getType());
        return new PageResult(page.getTotal(), page.getResult());
    }

    /**
     * 启用禁用分类
     *
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        //创建分类对象
        Category category=Category.builder()
                .id(id)
                .status(status)
                .updateTime(LocalDateTime.now())
                .updateUser(BaseContext.getCurrentId())
                .build();
        //操作数据库,修改分类状态
        categoryMapper.update(category);
    }

    /**
     * 修改分类
     *
     * @param categoryDTO
     */
    @Override
    public void update(CategoryDTO categoryDTO) {
        //创建分类对象,拷贝数据
        Category category=new Category();
        BeanUtils.copyProperties(categoryDTO, category);
        //补充操作数据
//        category.setUpdateTime(LocalDateTime.now());
//        category.setUpdateUser(BaseContext.getCurrentId());
        //操作数据库,完成修改
        categoryMapper.update(category);
    }

    /**
     * 新增分类
     *
     * @param categoryDTO
     */
    @Override
    public void addCategory(CategoryDTO categoryDTO) {
        //创建分类对象,拷贝数据
        Category category=new Category();
        BeanUtils.copyProperties(categoryDTO, category);
        //补充操作数据
        category.setCreateTime(LocalDateTime.now());
        category.setUpdateTime(LocalDateTime.now());
        category.setCreateUser(BaseContext.getCurrentId());
        //分类状态默认为禁用状态0
        category.setStatus(StatusConstant.DISABLE);
        //操作数据库,完成新增
        categoryMapper.addCategory(category);

    }

    /**
     * 根据分类id删除数据
     *
     * @param id
     * @return
     */
    @Override
    public void deleteById(Long id) {
        //查询当前分类是否关联了菜品,如果关联了就抛出业务异常
        Integer count=dishMapper.countByCategoryId(id);
        if (count > 0) {
            //当前分类下有菜品,不能直接删除
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }
        //查询当前分类是否关联了套餐,如果关联了就抛出业务异常
        count=setmealMapper.countByCategoryId(id);
        if (count > 0) {
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }
        //删除分类数据
        categoryMapper.deleteById(id);

    }

    /**
     * 根据类型查询分类
     *
     * @param type
     * @return
     */
    @Override
    public List<Category> list(Integer type) {
        List<Category> list=categoryMapper.list(type);
        return list;
    }
}
